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Finding the Fourth Proportional to 153,675.51, 212,093.01 and 90,038.67

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Solution

The fourth proportional to 153,675.51, 212,093.01 and 90,038.67 is: 124,265.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,675.51 : 212,093.01 = 90,038.67 : x
  2. Step 2: Convert to fraction form
    153,675.51/212,093.01 = 90,038.67/x
  3. Step 3: Cross multiply
    153,675.51x = 212,093.01 × 90,038.67
  4. Step 4: Simplify right side
    153,675.51x = 19,096,572,681.14
  5. Step 5: Solve for x
    x = 19,096,572,681.14/153,675.51
  6. Step 6: Final answer
    x = 124,265.55

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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.