Home / 130,909.61-180,655.43-74,320.98

Finding the Fourth Proportional to 130,909.61, 180,655.43 and 74,320.98

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Solution

The fourth proportional to 130,909.61, 180,655.43 and 74,320.98 is: 102,563.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,909.61 : 180,655.43 = 74,320.98 : x
  2. Step 2: Convert to fraction form
    130,909.61/180,655.43 = 74,320.98/x
  3. Step 3: Cross multiply
    130,909.61x = 180,655.43 × 74,320.98
  4. Step 4: Simplify right side
    130,909.61x = 13,426,488,417.51
  5. Step 5: Solve for x
    x = 13,426,488,417.51/130,909.61
  6. Step 6: Final answer
    x = 102,563.05

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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.