Home / 153,569.64-211,965.70-99,988.52

Finding the Fourth Proportional to 153,569.64, 211,965.70 and 99,988.52

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Solution

The fourth proportional to 153,569.64, 211,965.70 and 99,988.52 is: 138,009.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,569.64 : 211,965.70 = 99,988.52 : x
  2. Step 2: Convert to fraction form
    153,569.64/211,965.70 = 99,988.52/x
  3. Step 3: Cross multiply
    153,569.64x = 211,965.70 × 99,988.52
  4. Step 4: Simplify right side
    153,569.64x = 21,194,136,633.76
  5. Step 5: Solve for x
    x = 21,194,136,633.76/153,569.64
  6. Step 6: Final answer
    x = 138,009.94

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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.