Home / 105,281.44-145,288.47-56,883.40

Finding the Fourth Proportional to 105,281.44, 145,288.47 and 56,883.40

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Solution

The fourth proportional to 105,281.44, 145,288.47 and 56,883.40 is: 78,499.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,281.44 : 145,288.47 = 56,883.40 : x
  2. Step 2: Convert to fraction form
    105,281.44/145,288.47 = 56,883.40/x
  3. Step 3: Cross multiply
    105,281.44x = 145,288.47 × 56,883.40
  4. Step 4: Simplify right side
    105,281.44x = 8,264,502,154.40
  5. Step 5: Solve for x
    x = 8,264,502,154.40/105,281.44
  6. Step 6: Final answer
    x = 78,499.14

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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.