Home / 155,112,302.79-214,054,978.10-85,499,178.35

Finding the Fourth Proportional to 155,112,302.79, 214,054,978.10 and 85,499,178.35

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Solution

The fourth proportional to 155,112,302.79, 214,054,978.10 and 85,499,178.35 is: 117,988,866.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,112,302.79 : 214,054,978.10 = 85,499,178.35 : x
  2. Step 2: Convert to fraction form
    155,112,302.79/214,054,978.10 = 85,499,178.35/x
  3. Step 3: Cross multiply
    155,112,302.79x = 214,054,978.10 × 85,499,178.35
  4. Step 4: Simplify right side
    155,112,302.79x = 18,301,524,747,779,472
  5. Step 5: Solve for x
    x = 18,301,524,747,779,472/155,112,302.79
  6. Step 6: Final answer
    x = 117,988,866.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.