Home / 90,158.86-124,448.16-63,307.90

Finding the Fourth Proportional to 90,158.86, 124,448.16 and 63,307.90

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Solution

The fourth proportional to 90,158.86, 124,448.16 and 63,307.90 is: 87,385.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,158.86 : 124,448.16 = 63,307.90 : x
  2. Step 2: Convert to fraction form
    90,158.86/124,448.16 = 63,307.90/x
  3. Step 3: Cross multiply
    90,158.86x = 124,448.16 × 63,307.90
  4. Step 4: Simplify right side
    90,158.86x = 7,878,551,668.46
  5. Step 5: Solve for x
    x = 7,878,551,668.46/90,158.86
  6. Step 6: Final answer
    x = 87,385.22

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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.